2013-03-11  Sebastian Huber <sebastian.huber@embedded-brains.de>

	include/
	* opcode/nios2.h (OP_RDPRS): New define.
	(OP_MATCH_RDPRS): Likewise.

	opcodes/
	* nios2-opc.c (nios2_builtin_opcodes): Add entry for rdprs.

	gas/testsuite/
	* gas/nios2/nios2.exp: Run rdprs.
	* gas/nios2/rdprs.d: New file.
	* gas/nios2/rdprs.s: Likewise.
2013-03-11  Sebastian Huber <sebastian.huber@embedded-brains.de>

	include/
	* opcode/nios2.h (OPX_WRPRS): New define.
	(OP_MATCH_WRPRS): Likewise.

	opcodes/
	* nios2-opc.c (nios2_builtin_opcodes): Add entry for wrprs.

	gas/
	* config/tc-nios2.c (nios2_assemble_args_ds): New function.
	(nios2_arg_info_structs): Add "d,s" and "d,s,E" entries.

	gas/testsuite/
	* gas/nios2/nios2.exp: Run wrprs.
	* gas/nios2/wrprs.d: New file.
	* gas/nios2/wrprs.s: Likewise.
Allow 'thread' to be used as a variable name in expressions.

GDB treats the identifiers 'if', 'thread', and 'task' unconditionally
as expression delimiters in Ada mode, which is correct for 'if' and 'task',
but wrong for 'thread' in cases such as

      print thread

Borrowing from c-exp.y, we observe that 'thread' must be followed by
numerals, whereas identifiers never are and treat them as delimiters
only in that case.

In the process, the current also refactors and incidentally fixes the
code for rewinding the input to before the delimiting tokens.  For
example, the code

      watch expr if i > 2

fails because the input is only rewound to just before the 'i',
leaving the 'if' as part of the expression (and thus making the
rest look like trailing junk rather than a conditional clause).

gdb/ChangeLog:

    * ada-lex.l (rules): Only recognize 'thread' as a
    delimiter when followed by numerals, as for c-exp.y.
    Use new rewind_to_char function to rewind the input for
    expression-delimiting tokens.
    (rewind_to_char): New function.

gdb/testsuite/ChangeLog:

    * gdb.ada/expr_delims.exp: New file.
    * gdb.ada/expr_delims/foo.adb: New file.
    * gdb.ada/expr_delims/pck.ads: New file.
    * gdb.ada/expr_delims/pck.adb: New file.
2013-03-12  Yao Qi  <yao@codesourcery.com>
	    Hui Zhu  <hui@codesourcery.com>

	* dwarf2loc.c (access_memory): Change nbits to nbytes in gdb_assert.
	(dwarf2_compile_expr_to_ax): Call access_memory in DW_OP_deref and
	DW_OP_deref_size.
Eliminate warning message.

	* opcodes/mips-dis.c (print_insn_args): Modify def of reg.
2013-03-12  Hui Zhu  <hui@codesourcery.com>

	* dwarf2loc.c (dwarf2_compile_expr_to_ax): Update error message.
	* ada-lang.c (ada_read_renaming_var_value): Pass const
	pointer to expression string to parse_exp_1.
	(create_excep_cond_exprs): Likewise.
	* ax-gdb.c (agent_eval_command_one): Likewise.
	(maint_agent_printf_command): Likewise.
	Constify much of the string handling/parsing.
	* breakpoint.c (set_breakpoint_condition): Pass const
	pointer to expression string to parse_exp_1.
	(update_watchpoint): Likewise.
	(parse_cmd_to_aexpr): Constify string handling.
	Pass const pointer to parse_exp_1.
	(init_breakpoint_sal): Pass const pointer to parse_exp_1.
	(find_condition_and_thread): Likewise.
	Make TOK const.
	(watch_command_1): Make "arg" const.
	Constify string handling.
	Copy the expression string instead of changing the input
	string.
	(update_breakpoint_location): Pass const pointer to
	parse_exp_1.
	* eval.c (parse_and_eval_address): Make "exp" const.
	(parse_to_comma_and_eval): Make "expp" const.
	(parse_and_eval): Make "exp" const.
	* expression.h (parse_expression): Make argument const.
	(parse_exp_1): Make first argument const.
	* findcmd.c (parse_find_args): Treat "args" as const.
	* linespec.c (parse_linespec): Pass const pointer to
	linespec_expression_to_pc.
	(linespec_expression_to_pc): Make "exp_ptr" const.
	* parse.c (parse_exp_1): Make "stringptr" const.
	Make a copy of the expression to pass to parse_exp_in_context until
	this whole interface can be constified.
	(parse_expression): Make "string" const.
	* printcmd.c (ui_printf): Treat "arg" as const.
	Handle const strings.
	* tracepoint.c (validate_actionline): Pass const pointer to
	all calls to parse_exp_1.
	(encode_actions_1): Likewise.
	* value.h (parse_to_comma_and_eval): Make argument const.
	(parse_and_eval_address): Likewise.
	(parse_and_eval): Likewise.
	* varobj.c (varobj_create): Pass const pointer to parse_exp_1.
	(varobj_set_value): Likewise.
	* cli/cli-cmds.c (disassemble_command): Treat "arg" as const and
	constify string handling.
	Pass const pointers to parse_and_eval_address and
	parse_to_comman_and_eval.
	* cli/cli-utils.c (skip_to_space): Rename to ...
	(skip_to_space_const): ... this. Handle const strings.
	* cli/cli-utils.h (skip_to_space): Turn into macro which invokes
	skip_to_space_const.
	(skip_to_space_const): Declare.
	* common/format.c (parse_format_string): Make "arg" const.
	Handle const strings.
	* common/format.h (parse_format_string): Make "arg" const.
	* gdbserver/ax.c (ax_printf): Make "format" const.
	* python/python.c (gdbpy_parse_and_eval): Do not make a copy
	of the expression string.
	* mi/mi-cmds.h (mi_execute_command): Make "cmd" const.
	* mi/mi-interp.c (mi_interpreter_exec): Make "command" const.
	Remove temporary copy of input string.
	(mi_execute_command_wrapper): Make "cmd" const.
	* mi/mi-main.c (mi_execute_command): Make "string_ptr" const.
	* mi/mi-parse.c (mi_parse_argv): Make "args" const.
	Use const strings.
	(mi_parse): Make "cmd" const.
	Use const strings.
	* mi/mi-parse.h (mi_parse): Make "cmd" const.
2013-03-12  Sebastian Huber <sebastian.huber@embedded-brains.de>

	include/
	* opcode/nios2.h: Edit comment.

	gas/
	* config/tc-nios2.c (nios2_consume_arg): Delete 'k' case.  Add 'o'
	case.  Add default BAD_CASE to switch.

	gas/testsuite/
	* gas/nios2/break.d: Check instruction values.
2013-03-12  Sebastian Huber <sebastian.huber@embedded-brains.de>

	gas/testsuite/
	* gas/nios2/nios2.exp: Use run_dump_tests.
	* gas/nios2/mov.d: Delete file.
	* gas/nios2/mov.s: Likewise.
	* gas/nios2/rol.d: Likewise.
	* gas/nios2/rol.s: Likewise.
	* gas/nios2/add.d: Check instruction values.
	* gas/nios2/align_fill.d: Likewise.
	* gas/nios2/and.d: Likewise.
	* gas/nios2/branch.d: Likewise.
	* gas/nios2/bret.d: Likewise.
	* gas/nios2/cache.d: Likewise.
	* gas/nios2/call.d: Likewise.
	* gas/nios2/call26.d: Likewise.
	* gas/nios2/cmp.d: Likewise.
	* gas/nios2/comments.d: Likewise.
	* gas/nios2/complex.d: Likewise.
	* gas/nios2/ctl.d: Likewise.
	* gas/nios2/custom.d: Likewise.
	* gas/nios2/etbt.d: Likewise.
	* gas/nios2/flushda.d: Likewise.
	* gas/nios2/jmp.d: Likewise.
	* gas/nios2/ldb.d: Likewise.
	* gas/nios2/ldh.d: Likewise.
	* gas/nios2/ldw.d: Likewise.
	* gas/nios2/lineseparator.d: Likewise.
	* gas/nios2/movi.d: Likewise.
	* gas/nios2/movia.d: Likewise.
	* gas/nios2/mul.d: Likewise.
	* gas/nios2/nor.d: Likewise.
	* gas/nios2/or.d: Likewise.
	* gas/nios2/registers.d: Likewise.
	* gas/nios2/ret.d: Likewise.
	* gas/nios2/rotate.d: Likewise.
	* gas/nios2/stb.d: Likewise.
	* gas/nios2/sth.d: Likewise.
	* gas/nios2/stw.d: Likewise.
	* gas/nios2/sub.d: Likewise.
	* gas/nios2/sync.d: Likewise.
	* gas/nios2/trap.d: Likewise.
	* gas/nios2/tret.d: Likewise.
	* gas/nios2/xor.d: Likewise.
Record GDB 7.6 branch creation. Bump version number to 7.6.50.20130312-cvs.
Update NEWS file following GDB 7.6 branch creation.

gdb/ChangeLog:

        * NEWS: Create a new section for the next release branch.
        Rename the section of the current branch, now that it has
        been cut.
	* powerpc.cc (is_branch_reloc): Forward declare.
	(Target_powerpc::do_can_check_for_function_pointers): New predicate.
	(Target_powerpc::Scan::local_reloc_may_be_function_pointer): Return
	false for 64-bit, true for 32-bit non-branch relocs.
	(Target_powerpc::Scan::global_reloc_may_be_function_pointer): Likewise.
	* testsuite/Makefile.am (icf_test): Use linker map file instead of
	nm output.
	(icf_safe_test): Generate linker map file as well as nm output.
	(icf_safe_so_test): Likewise.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/icf_test.sh: Parse linker map file to determine
	section folding.
	* testsuite/icf_safe_test.sh: Likewise.  Expect folding for PowerPC.
	* testsuite/icf_safe_so_test.sh: Likewise.
	(X86_32_or_ARM_specific_safe_fold): Merge into..
	(arch_specific_safe_fold): ..this.
	(X86_64_specific_safe_fold): Delete unused function.
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